21 November 2012
⇐20121120 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20121122⇒

NOAA
7 Active Regions
11611
11612
11613
11616
11618
11619
11620

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E34N48
(-358",708") 		E56-E03
(53) 		2.0 0.5 7.5e32
2 W05S34
(69",-577") 		E08-W15
(23) 		0.8 -9.3 -2.7e33
3 E15S38
(-198",-631") 		E21-E09
(12) 		0.2 -9.3 -6.8e32
4 W05N21
(81",324") 		W04-W06
(2) 		0.0 7.9 6.6e31

Note: Solar Monitor's coronal hole segmentations are performed by CHIMERA, a copy of which is available at: github.com/TCDSolar/CHIMERA.

The operations of the CHIMERA algorithm is described in a peer reviewed paper: arxiv.org/abs/1711.11476.

An extensive copy of coronal hole properties are available at: solarmonitor.org/data.

The latest positions of the coronal holes are given in heliocentric co-ordinates, and the region positions are valid on 21-Nov-2012 22:00 UT .